The Independent Investigations Office spokeswoman Kelly Kilpatrick said the shooting happened at an open house sponsored by B.C. Hydro for the Site C dam project on Thursday evening.
IIO investigators will fly up Friday morning to take over the case. In the meantime, RCMP officers have secured the site.
This is the fifth police-related shooting the IIO is investigating this year.
In 2014, there were 11 officer-involved shootings and five in 2013.